I live in Montana and right now our temperature is only about 6 below zero, but we have a fairly strong wind. I have a heat lamp in my coop and have the windows cracked for ventilation, but my question is, if the wind is blowing directly on the side of the coop with the windows, should I still keep them cracked open??? I have a vent on the other side, but it's a fairly large vent and I feel that the heat from the lamp will just go out the vent. What are your thoughts?? Thank you!